Comparison Of Clinical Outcomes of Intraperitoneal Bupivacaine Instillation Versus Placebo as Preemptive Analgesia in Patients Undergoing Open Appendectomy

Inclusion Criteria: * Patients presenting to the emergency department undergoing open appendectomy. Exclusion Criteria: * Patients undergoing interval appendectomy or having perforated appendix as evident by examination (abdominal tenderness/ fever) and USG findings (presence of abscess, fluid collection, or free air). * Uncontrolled medical disease (DM: BSL \>200mg/dl, HTN: BP \>140/90) * History of chronic kidney or liver disease/ psychiatric illness/ Active peptic ulcer disease (as determined on history and medical records) * Alcoholics * History of chronic pain or patients on analgesic medications * Pregnant females * History of allergy to bupivacaine/ ketorolac as determined on history * Children, Adolescents and patients with mental illness.